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co2
within 25 miles
Apr 5, 2026
9 opportunities found! use fewer search filter criteria to find more opportunities

2B Technologies, Inc.

AQTreks (AirQualityTreks)

Monitor air pollution levels and map air pollution around the US

Multiple locations, including yours!

  • Ongoing
Citizen ScienceNature & OutdoorsGeographyEducationCrowd FundingTransportationEcology & EnvironmentComputers & TechnologyClimate & WeatherChemistryOcean Water Marineinvestigationcarbon dioxideandroidenvironmentcitizen sciencesummerweatherspringair pollutionec2020girl scoutshikingiphonesciencedatabicyclingexperimentairair pollution monitoringair qualityparticulate matternatureclimate monitoringenvironmental justiceappdatabaseglobal warmingautumnsmartphone applicationoutdoorsair quality indexcarbon monoxideclimate changemobile applicationcommunity-based monitoringclimatestemequitywinterusaweather data

Treezilla

Map every tree in Britain

Multiple locations, including yours!

  • Ongoing
Citizen ScienceEcology & EnvironmentNature & OutdoorsComputers & Technologyenvironmentmappingecologukgreat britainmapgreat britiantreeecologytrees
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